package train48days;

import java.util.Scanner;

public class 因子个数 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()){
            int n = sc.nextInt();
            int count =0;
            for (int i = 2; i <Math.sqrt(n) ; i++) {
                if (n%i==0){
                    while (n%i==0){
                        n=n/i;
                    }
                    count++;
                }
            }
            if (n!=1){
                count++;
            }
            System.out.println(count);
        }
    }
}
